Sawing or cutting-off machine for cutting rods into pieces



Patented Sept. 10, 1929.

UNITED STATES BERTOLD BUXBAUM, or BERLIN-CHARLOTTENBURG, GERMANY.

SAWING OR CUTTING-OFF MACHINE FOR CUTTING'BODS INTO PIECES.

Application filed January 21, 1928, Serial No. 248,470, and illGfili'nEilly January. 18, 1927.

This invention relates to sawing machines and cutting-off machines; more especially, it relates to a feed-mechanism for use in connection with sawing and cutting-oft machines, for instance such as circular saws, bow saws, band saws, slicing machines, presses and separating machines of all types and kind in order to render their operation automatic.

The automatically working saws hitherto designed operate either with gripping jaw feed which is, however, expensive in that separate tensioning members are required for the various sectional shapes and the exchange of these members causes loss of time; or said automatically working saws operate with feed by a weight which either shoves the horizontal rod forward step by step by means of a pulling rope, or the rod is located vertically in the machine. The disadvantages of the first mentioned constructional form consist therein that the connection between the pulling rope and the rod must be established anew at every fresh rod, the weight must be suspended from the ceiling or a column, the length of the rod depends upon the height of fall of the weight as determined by the conditions existing in the individual cases, and that a regulation of thefeed acceleration according to the weight of the rod is lacking. The disadvantages of the vertical arrangement of the rod consists therein that the supply must be effected from the next higher floor, and that also in this case a regulation according to the heaviness of the rod is lacking so that inadmissible shocks arise when thick rods are fed forwards.

The drawbacks from which the known devices are suffering are obviated, according to the present invention, by arranging the rodguide in a vertical plane in an inclined position, preferably in such a manner that it can be adjusted to any desired angle. The entire cutting-off mechanism can be, eventually, turned together with the guide members. By the adjustment of the said angle it is rendered possible to adjust the feed-acceleration and the feed-speed in such a manner that with rods of any heaviness and of any sectional shape the acceleration or the speed is just such that the push upon the abutment memher is not inadmissibly strong. j j

The invention is illustrated diagrammaticallyand by way of example on the accompanying drawing on which Figurel is a plan of the new device, Figures 2 and 3 are two ver-. tical sections inplanes standing at right an-- gles with respect to each other, and Figures 4 and 5 are details which are also fully described hereinafter. 1

On the drawing, 1 (Figs. 1 and 2) is the rod to be cut-into pieces and 2 is a guide memher for it. This guidemembermay be angiu lar in transverse section according to Fig. 4' and supporting rolls 2 may be inserted into it in certain suitable intervals, as in Fig. 5, for facilitating the moving forward of the are the two jaws of the vise in which the rod ,1 is clamped; the jaw 3 is stationary, the aw 4 movable. 5 is an adjustableabutment mem her which can be fixed in its adjusted position by means of a clamping lever 6. The member 5. is adjusted according to "the length which the pieces to be cut off from the rod 1 are to have. a

l 7 denotes the driving motorwhich, in the constructional form shown by wayqof example, drivesthe saw bladell by the intermediary of the cog-wheels 8 and 9 and the shaft 10.; The entire mechanism is supported upon a plate 12 carried by an axle 13 upon which it can be turned, and this axle is supported on rod to. be cut in the guide member. 13 and 4 a body 14 which can be adjusted to any desired angle on an axle 22 mounted in the standard 23. A pin 24; is also'arranged on said standard 23 and projects through a circularly curved slot 25 in the body 14. The outer end of said pin is screw-threaded and provided with a nut 32 having an arm 33 so that the body 14 can be fixed in the respective adjusted position by a clamping nut 32. The circular saw 11 is fed forward towards the rod 1 by the oscillations of the plate12 upon the axle 13.

The oscillations are produced bythe shaft I 10, the cog-wheels 15 and 16, the shaft 17 and the two cams 18 and 19 which co-operate with two rolls 20 supported on the body 141 in such a manner that the saw effects the cut With a ard 29.

feed speed corresponding to the material of the rod to be cut. The spring 21 presses the cams 18 and 19 against the rolls 20. When a piece has been cut off from the rod, the plate 12 swings backwardly under the pressure of the spring 21 and the jaw 4 which is under spring pressure releases the rod 1 which now slides towards and against the abutment member 5, whereupon the cams 18 and 19 turn the oscillable plate 12 forwardly during whichtime first the vise jaw 4 clamps the rod fast between itself and the other jaw 3 and then, the blade effects the cut.

Adjusting the body 1 1 in such an angle as .correspondsfto the particularities of the rod to be cut, that is to say,its heaviness, sectional shape, surface working, and the like, is effected by turning the frame 1 1 about the axle 22 appropriately, and fixinglt 1n the adjusted position. The'angle can be read on a graduated scale 26, Fig. 2.

The positions of the stationary vise aw 3 as corresponding to thevarious diameters of the rod to be out can be adjusted by means of the screw-threaded-spindle :27, and a crank 34 connected therewith and provided with a graduated scale'35 (Fig. 3) engaging a stationarypointer or'mark on the body 1%. Also thetension of the spring 36 pertaining to the movable aw i can be regulated by means of -a screw-threaded spindle 28 in conformity with the thickness of the rod to be cut.

The guidemember 2 is secured to a stand- The middle portion of the guide member may be carried by a rope suspended from an arm 37 of a standard 31 and car- 'rying a poise S8 at-its one end and a ring '39 at its other end engaging said guide member, as shown in Fig. 2. The standard 31 1s afiixed to the body 14.

The cog-wheels 8 and 9 can be exchanged according to the diameter of the circular saw;

also the cog-wheels 15 and 16, as wellas the came 18 and 19, are exchangeable, all according tothe length of way of the feed and the speed of the same, the sectionalshape of the rod and the material of the same being duly considered.

I claim; I "1. In combination with the cutting means ofa'sawing or cutting-off machine for cut-ting rods into pieces, a guide member for the rod to be cut, a body carrying said guide member and adapted to be adjusted to any required position, means for securing it in its adjusted position, a swinging plate pivoted to said body, a cutting member and driving means for it, this member and these means being supported by said swingingplate, and means arranged onsaid body and plate adapted to oscillate said plate. c

2. In combination with the-"cutting means of asawing 'or cutting-off machine for cutting rods intopieces, a guide member for the rod to be cut, a body carrying said guide member and adapted to be adjusted to any required position, means for securing it in its .of a sawingor cutting-off machine for cutting rods into pieces, a guide member for the rod to'be cut,a-bo :lycarrying said guide member and adapted to be adjusted to any re quired position, means for securing it in its adjusted position, a swinging plate pivoted to said body, a cutting member and driving means for it, this member and these means being supported by said swinging plate arranged on said body and plate adapted to oscillate said plate and a vise comprising a stationary jaw and a movable jaw, this latter being connected with the said swinging plate and means for adjusting said jaws with respectto the diameter of the rod tobe cut.

4-. In combination with the cutting means of a sawing or cutting-off machine for cutting rods into pieces, a guidemember for the rod to be cut, a body carrying said guide member in an inclined position, a swinging plate pivoted to said body, a cutting member and driving means for it, this memberand these means being supported by said swing- In testimonywhereof I afix my signature.

BERTOLD BUXBAUM. 

